Bulb



FIG. 1 is a perspective view including a face, an end, and a side of the bulb;

FIG. 2 is a perspective view including an opposite face, an opposite end, and an opposite side of the bulb;

FIG. 3 is a plan view of the face of the bulb;

FIG. 4 is a plan view of the opposite face of the bulb;

FIG. 5 is a plan view of the side of the bulb;

FIG. 6 is a plan view of the opposite side of the bulb;

FIG. 7 is a plan view of the end of the bulb; and,

FIG. 8 is a plan view of the opposite end of the bulb. 

CLAIM The ornamental design for a bulb, as shown and described. 